<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        p{
            background-color: aqua;
            color:red;
            color:rgb(0,255,0);

            /*透明度 */
            color:rgba(0,0,0,1);

            color:#00f

        }
    </style>
</head>
<body>
    <p>p标签</p>
</body>
</html>